package main

import (
	//"bufio"
	"bytes"
	"code.google.com/p/go.text/encoding/simplifiedchinese"
	"code.google.com/p/go.text/transform"
	//"flag"
	"fmt"
	goq "github.com/PuerkitoBio/goquery"
	"io/ioutil"
	"net"
	"net/http"
	"os"
	//"runtime"
	//"strconv"
	"strings"
	"sync"
	"time"
)

var (
	main_domain = "" //主域名
	waitgroup   = &sync.WaitGroup{}
	LOG         = "58"
	ErrLOG      = "58"
	mutex       = &sync.Mutex{}
)

func main() {
	main_domain = "http://qy.58.com"
	LOG = "bj." + LOG

	for i := 1; i <= 38; i += 5 {
		for j := i; j < i+5 && j <= 38; j++ {
			waitgroup.Add(1)
			tmpurl := fmt.Sprintf("/bj_269/pn%d/?PGTID=14313953362990.3744332550559193&ClickID=1", j)
			go getList(tmpurl)
		}
		waitgroup.Wait()
		time.Sleep(1e10)
	}

	fmt.Println("done.")
}

//获取列表
func getList(url string) {
	defer waitgroup.Done()
	tmpurl := fmt.Sprintf("%s%s", main_domain, url)
	doc, e := getDoc(tmpurl)
	if e != nil {
		errlog("[" + tmpurl + "]" + e.Error())
		return
	}

	doc.Find(".compList").Find("a").Each(func(i int, sec *goq.Selection) {
		var (
			link, txt string
		)
		link, ok := sec.Attr("href")
		if ok {
			txt = filterStr(sec.Text())
			if !strings.Contains(txt, "独立经纪人") {
				getInfo(link)
			}
		}
	})
}

//获取info
func getInfo(url string) {
	doc, e := getDoc(url)
	if e != nil {
		errlog("[" + url + "]" + e.Error())
		return
	}
	var (
		companyname  string //公司名称
		contact_name string //联系人
		mobile_phone string //联系电话
		email        string //email
		address      string //公司地址
	)

	companyname = filterStr(doc.Find(".compT").Find("h1").Find("a").Text())
	if companyname == "" {
		return
	}
	contact_name = filterStr(doc.Find(".basicMsg").Find("th:contains('联系人')").Next().Text())
	if contact_name == "" {
		contact_name = "--"
	}
	mobile_phone, ok := doc.Find(".basicMsg").Find(".telNum").Find("img").Attr("src")
	if !ok {
		mobile_phone = "--"
	} else {
		mobile_phone = filterStr(mobile_phone)
	}
	email, ok = doc.Find(".basicMsg").Find("th:contains('邮箱')").Next().Find("img").Attr("src")
	if !ok {
		email = "--"
	} else {
		email = filterStr(email)
	}
	address = filterStr(doc.Find(".basicMsg").Find(".adress").Children().Eq(0).Text())
	if address == "" {
		address = "--"
	}
	outlog(url + "||" + companyname + "||" + contact_name + "||" + mobile_phone + "||" + email + "||" + address)
}

//获取doc
func getDoc(url string) (*goq.Document, error) {
	res, e := getResp(url)
	if e != nil {
		return nil, e
	}
	doc, e := goq.NewDocumentFromResponse(res)
	if e != nil {
		return nil, e
	}
	return doc, nil
}

//获取response
func getResp(url string) (*http.Response, error) {
	req, e := http.NewRequest("GET", url, nil)
	req.Header.Add("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8")
	//req.Header.Add("Accept-Encoding", "gzip,deflate,sdch")
	req.Header.Add("Accept-Language", "zh-CN,zh;q=0.8")
	req.Header.Add("Cache-Control", "max-age=0")
	req.Header.Add("Proxy-Connection", "keep-alive")
	req.Header.Add("User-Agent", "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.63 Safari/537.36")
	c := &http.Client{
		Transport: &http.Transport{
			Dial: func(netw, addr string) (net.Conn, error) {
				deadline := time.Now().Add(25 * time.Second)
				c, err := net.DialTimeout(netw, addr, time.Second*20)
				if err != nil {
					return nil, err
				}
				c.SetDeadline(deadline)
				return c, nil
			},
		},
	}

	var resp *http.Response
	//尝试三次
	for retry := 0; retry < 3; retry++ {
		resp, e = c.Do(req)
		if e != nil {
			time.Sleep(time.Second * 1)
		} else {
			break
		}
	}
	if e != nil {
		return nil, e
	}
	return resp, nil
}

//gbk->utf8
func G2U(s string) string {
	ret, e := gbktoutf8([]byte(s))
	if e != nil {
		return ""
	}
	return string(ret)
}

//utf8->gbk
func U2G(s string) string {
	ret, e := utf8togbk([]byte(s))
	if e != nil {
		return ""
	}
	return string(ret)
}

func gbktoutf8(s []byte) ([]byte, error) {
	reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewDecoder())
	d, e := ioutil.ReadAll(reader)
	if e != nil {
		return nil, e
	}
	return d, nil
}
func utf8togbk(s []byte) ([]byte, error) {
	reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewEncoder())
	d, e := ioutil.ReadAll(reader)
	if e != nil {
		return nil, e
	}
	return d, nil
}

func filterStr(str string) string {
	str = strings.Replace(str, "\r\n", "", -1)
	str = strings.Replace(str, "\r", "", -1)
	str = strings.Replace(str, "\n", "", -1)
	str = strings.Replace(str, "#", "", -1)
	str = strings.TrimSpace(str)
	return str
}

func s(a ...interface{}) {
	fmt.Println(a)
}

//outlog
func outlog(str string) {
	pwd, _ := os.Getwd()
	outlog := fmt.Sprintf("%s/%s_log.txt", pwd, LOG)
	file, err := os.OpenFile(outlog, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
	defer file.Close()
	if err != nil {
		return
	}
	str += "\n"
	file.WriteString(str)
}

//errlog
func errlog(str string) {
	pwd, _ := os.Getwd()
	outlog := fmt.Sprintf("%s/%s_err.txt", pwd, ErrLOG)
	file, err := os.OpenFile(outlog, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600)
	defer file.Close()
	if err != nil {
		return
	}
	str += "\n"
	file.WriteString(str)
}
